pre.ig.ni.tion

n.（名詞）
The ignition of fuel in an internal-combustion engine before the spark passes through the fuel, resulting from a hot spot in the cylinder or from too great a compression ratio for the fuel.
提前點(diǎn)火：由內(nèi)燃機(jī)中的火星穿過燃料之前的燃燒，是因油缸熱點(diǎn)過高或?qū)θ剂系倪^大壓縮比造成的